Basis for code in A075952.

Terms

a(0) =4095a(1) =258111a(2) =1864135a(3) =6599385a(4) =11097450a(5) =50647922a(6) =84501916a(7) =404780686a(8) =1612789139a(9) =2819363761a(10) =4984963383a(11) =25789527134a(12) =43622974785a(13) =206178161033a(14) =352724537908