Define a pair of sequences c_n, d_n by c_0=0, d_0=1 and thereafter c_n = c_{n-1}+d_{n-1}, d_n = c_{n-1}+4*n+2; sequence here is d_n.
A192750
Define a pair of sequences c_n, d_n by c_0=0, d_0=1 and thereafter c_n = c_{n-1}+d_{n-1}, d_n = c_{n-1}+4*n+2; sequence here is d_n.
Terms
- a(0) =1a(1) =6a(2) =11a(3) =21a(4) =36a(5) =61a(6) =101a(7) =166a(8) =271a(9) =441a(10) =716a(11) =1161a(12) =1881a(13) =3046a(14) =4931a(15) =7981a(16) =12916a(17) =20901a(18) =33821a(19) =54726a(20) =88551a(21) =143281a(22) =231836a(23) =375121a(24) =606961a(25) =982086a(26) =1589051a(27) =2571141a(28) =4160196a(29) =6731341
External references
- oeis: A192750