login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A223449 as a triangular array

15
2828
6610466
144408408144
336161629881616336
752643220640206406432752
175225664149120262368149120256641752
393610252810506243364544336454410506241025283936
91684098567557696

A223449 as a square array

152866144336752175239369168
281044081616643225664102528409856
6640829882064014912010506247557696
1441616206402623683364544
33664321491203364544
752256641050624
1752102528
3936
152866144336752175239369168
281044081616643225664102528409856
6640829882064014912010506247557696
1441616206402623683364544
33664321491203364544
752256641050624
1752102528
3936