Multiply by 1, add 1, multiply by 2, add 2, etc., start with 1.

A019464

Multiply by 1, add 1, multiply by 2, add 2, etc., start with 1.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =6a(5) =18a(6) =21a(7) =84a(8) =88a(9) =440a(10) =445a(11) =2670a(12) =2676a(13) =18732a(14) =18739a(15) =149912a(16) =149920a(17) =1349280a(18) =1349289a(19) =13492890a(20) =13492900a(21) =148421900a(22) =148421911a(23) =1781062932a(24) =1781062944a(25) =23153818272a(26) =23153818285a(27) =324153455990a(28) =324153456004

External references