Positions of 2's in A264977; positions of 3's in A277330.

Terms

a(0) =2a(1) =10a(2) =26a(3) =58a(4) =82a(5) =122a(6) =170a(7) =250a(8) =346a(9) =418a(10) =506a(11) =562a(12) =626a(13) =698a(14) =842a(15) =1018a(16) =1130a(17) =1258a(18) =1402a(19) =1690a(20) =1858a(21) =2042a(22) =2266a(23) =2522a(24) =2810a(25) =3386a(26) =3722a(27) =4090a(28) =4538a(29) =5050