Partial sums of A084519. Positions of ones in the first differences of A084516.

A084518

Partial sums of A084519. Positions of ones in the first differences of A084516.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =18a(4) =65a(5) =238a(6) =877a(7) =3234a(8) =11929a(9) =44006a(10) =162341a(11) =598890a(12) =2209361a(13) =8150542a(14) =30068125a(15) =110924178a(16) =409209865a(17) =1509614198a(18) =5569110677a(19) =20544980154a(20) =75792390209a(21) =279605352286

External references