Irregular table read by rows: n-th row lists the 9 n-gonal numbers of a 3 X 3 semimagic square with the smallest magic sum. The terms of each row are arranged in the manner shown in A261816.
A265141
Irregular table read by rows: n-th row lists the 9 n-gonal numbers of a 3 X 3 semimagic square with the smallest magic sum. The terms of each row are arranged in the manner shown in A261816.
Terms
- a(0) =15a(1) =66a(2) =630a(3) =231a(4) =435a(5) =45a(6) =465a(7) =210a(8) =36a(9) =16a(10) =529a(11) =2704a(12) =1024a(13) =1936a(14) =289a(15) =2209a(16) =784a(17) =256a(18) =651a(19) =54626a(20) =356972a(21) =135751a(22) =241001a(23) =35497a(24) =275847a(25) =116622a(26) =19780a(27) =6a(28) =39621a(29) =481671
External references
- oeis: A265141