Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=2, k=1 and l=1.

A176612

Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=2, k=1 and l=1.

Terms

    a(0) =1a(1) =2a(2) =7a(3) =22a(4) =77a(5) =297a(6) =1217a(7) =5192a(8) =22807a(9) =102427a(10) =468067a(11) =2169227a(12) =10170687a(13) =48155437a(14) =229916207a(15) =1105682842a(16) =5350944837a(17) =26040130117a(18) =127349649297a(19) =625556921097

External references