Subsequence of centered square numbers obtained by adding four triangles from A276914 and a central element, a(n) = 4*A276914(n) + 1.

A276916

Subsequence of centered square numbers obtained by adding four triangles from A276914 and a central element, a(n) = 4*A276914(n) + 1.

Terms

    a(0) =1a(1) =5a(2) =41a(3) =61a(4) =145a(5) =181a(6) =313a(7) =365a(8) =545a(9) =613a(10) =841a(11) =925a(12) =1201a(13) =1301a(14) =1625a(15) =1741a(16) =2113a(17) =2245a(18) =2665a(19) =2813a(20) =3281a(21) =3445a(22) =3961a(23) =4141a(24) =4705a(25) =4901a(26) =5513a(27) =5725a(28) =6385a(29) =6613

External references