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A050722 Palindromic triangular numbers arising from A050721 and A083571. +0
4
3, 6, 66, 5995, 15051, 15199896744769899151 (list; graph; listen)
OFFSET

1,1
LINKS

P. De Geest, Subsets of palindromic triangulars

CROSSREFS

Cf. A008509, A008510, A050721.

Sequence in context: A076551 A127637 A068665 this_sequence A069502 A023174 A157197

Adjacent sequences: A050719 A050720 A050721 this_sequence A050723 A050724 A050725

KEYWORD

nonn,base,hard

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Sep 15 1999.

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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.

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