%I #10 Mar 31 2012 10:28:39

%S 1,2636362,106515601,3066863686603,148749979947841,219339595933912,

%T 853637858736358

%N Palindromic centered 37-gonal numbers.

%C 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,...

%H T. Trotter, <a href="http://trottermath.net/polygonal-numbers/">Polygonal numbers</a>

%K nonn,base,more

%O 1,2

%A _Kausthub Gudipati_, Oct 03 2011