decagon is spelled 10-gon in the database
deceptive plots: A014612 , A034598 , A034415 , A001358 (semiprimes)
Decimal equivalent:: A003100 , A003188
decimal expansion contains no 0's: A007377 , A007496
decimal expansion of square roots: see under: square root(s)
decimal expansions (1):: A002117 , A007493 , A002163 , A002392 , A007377 , A007496 , A005532 , A006891 , A002580 , A007507 , A002210 , A001113 , A003678 , A000796
decimal expansions (2):: A005533 , A005600 , A005596 , A006834 , A005534 , A002193 , A002285 , A002581 , A007525 , A006890 , A005531 , A003671 , A003672 , A002389
decimal expansions (3):: A001620 , A005480 , A007450 , A001622 , A005597 , A003676 , A002162 , A005481 , A003677 , A003673 , A002194 , A002161 , A005486 , A005601
decimal expansions (4):: A006833 , A003675 , A005482 , A006752 , A002391 , A002388
decimal expansions - see also under individual constants (e, A001113 ; Pi, A000796 ; etc.)
Decompositions:: A002850 , A002126 , A001031 , A002372
Dedekind psi function: A001615
Dedekind's function eta(x): A010815 *, A007706 *
Dedekind's function eta(x): see also under eta(x)
Dedekind's problem (or numbers): A000372 *, A003182 *, A007153 *
Dedekind's problem: see also Boolean functions, monotone
deficiency , sequences related to (start):
deficiency: A033879 *, A033880 , A033883
deficiency: see also abundancy
deficiency: see also abundancy
deficient numbers: A005100 *, A006039
Deficit:: A005675
Definite integrals:: A002571 , A002570
Degree sequences:: A007020 , A005155
Delannoy numbers, central: A001850 *
Delannoy numbers, table of: A008288 *
Deleham's operator DELTA: A084938
DELTA operator: A084938
Demlo numbers: A002477 *
Demlo numbers: see also (1) A002275 A063750 A075411 A075412 A075413 A075414 A075415 A075416 A075417 A080150 A080151 A080160
Demlo numbers: see also (2) A080161 A080162
denumerants: A000115 *
derangements: A000166 *
derivative of n: A038554 *, A003415 *
Derivatives:: A005168 , A005727 , A003262
descending dungeons: see dungeons
describe n: see "say what you see"
describe previous term!: A005150 *
describe previous term: see "say what you see"
Describe previous term:: A005341 , A006751 , A006715 , A006919 , A007651 , A006711
designs, covering: see covering numbers
designs, spherical: see spherical designs
Determinants:: A003116 , A002771 , A002772 , A001332 , A002776 , A002204 , A006377 , A005249