dodecagonal is spelled 12-gonal in the database
dodecahedral numbers: A006566 *, A007589 , A005904 * (centered)
dodecahedral numbers: see also A005903 , A053012 , A004068 , A005917 , A053017 , A053018 , A053019
dodecahedron: A000545 A005903 A030135 A030137 A054882 A054883 A063722 A063723 A066402 A066404
Doehlert-Klee designs: A005765
dominoes, sequences related to (start):
dominoes, game of: A031940 , A008967 , A045430
dominoes, packing a box with (or tilings): (1) A001224 A004003 A006125 A001835 A002414 A003697 A003729 A003735 A003741 A003747 A003757
dominoes, packing a box with (or tilings): (2) A003763 A003769 A003775 A004253 A005178 A007762 A028420 A038758 A054344
dominoes, see also: A006574 , A056785 , A056786
dominoes: the five domino sequences: A108376 , A108377 , A108378 , A108379 , A108392
Don's sequence: A007448
double factorial numbers n!!: A000165 *, A001147 * A006882 *
double-free subsets: A050292
doubling substrings (Max Alekseyev's problem): (start):
doubling substrings (Max Alekseyev's problem): A135473 *, A135017 , A135156 , A135157
doubling substrings (Max Alekseyev's problem): see also A137739 , A137740 , A137741 , A137742 , A137743 *, A137744 , A137745 , A137746 , A137747 , A137748 , A130838
doubly triangular numbers: A002817
Dowling numbers: A003581
dragon-curve sequences: see folding a piece of paper (dragon curves)
draughts: see checkers
Dress's sequence: A001316 *
Duffinian numbers: A003624 *
dumbbells: A002940 , A002941 , A002889 , A046741 , A055608
dungeons: (01) The four main sequences and their pairwise differences are:
dungeons: (02) alpha=A121263 ------------ beta-alpha=A122734 --------- beta=A121265
dungeons: (03) ....|.......................................................|
dungeons: (04) ....|..............gamma-alpha=A131011 ......................|
dungeons: (05) delta-alpha=A130287 .............delta-beta=A131012 ....beta-gamma=A127744
dungeons: (06) ....|.......................................................|
dungeons: (07) ....|.......................................................|
dungeons: (08) delta=A121296 ------------ delta-gamma=A128916 ------- gamma=A121295
dungeons: (09) see also A121266 , A121264 , A121863 , A121864 , A122618
duplicating substrings: see doubling substrings
Dutch: A007485 , A090589
Dyck paths:: A005223 , A005220 , A005221 , A005701 , A005700 , A005222 , A006149 , A006150 , A006151
dying rabbits: A000044 A023434 A023435 A023436 A023437 A023438 A023439 A023440 A023441 A023442
Dynamic storage:: A005595 , A005594
D_3 lattice: see f.c.c. lattice
D_3* lattice: see b.c.c. lattice
D_4 lattice: see D4 lattice
D_n lattice: coordination sequence for: see A007900 .