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A050722 Palindromic triangular numbers arising from A050721 and A083571. 3
3, 6, 66, 5995, 15051, 15199896744769899151 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
CROSSREFS
Sequence in context: A306451 A068665 A229236 * A069502 A296374 A362822
KEYWORD
nonn,base,hard
AUTHOR
Patrick De Geest, Sep 15 1999
STATUS
approved

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Last modified May 22 06:48 EDT 2024. Contains 372743 sequences. (Running on oeis4.)