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A196496 Palindromic centered 37-gonal numbers. 0
1, 2636362, 106515601, 3066863686603, 148749979947841, 219339595933912, 853637858736358 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
The centered k-gonal numbers are defined in trottermath.net as (k*n^2-k*n+2)/2, and elsewhere with a slightly different standard index n as (k*n^2+k*n+2)/2. The centered 37-gonal numbers are 1, 38, 112, 223, 371, 556, 778,.... A086272(36,n), where A086272 uses yet another index convention for k. The sequence is generated by centered 37-gonal numbers with standard indices n=1, 377, 2399, 407156,...
LINKS
T. Trotter, Polygonal numbers
CROSSREFS
Sequence in context: A233723 A162026 A229799 * A105380 A250911 A157840
KEYWORD
nonn,base,more
AUTHOR
Kausthub Gudipati, Oct 03 2011
STATUS
approved

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)