a(n) is the solution to the postage stamp problem with n denominations and 4 stamps.

A001214

a(n) is the solution to the postage stamp problem with n denominations and 4 stamps.

Terms

    a(0) =4a(1) =10a(2) =26a(3) =44a(4) =70a(5) =108a(6) =162a(7) =228a(8) =310a(9) =422a(10) =550a(11) =700a(12) =878a(13) =1079a(14) =1344a(15) =1606a(16) =1944a(17) =2337a(18) =2766a(19) =3195a(20) =3668a(21) =4251a(22) =4923a(23) =5631a(24) =6429

External references