Sum of terms in level n of TRIP - Stern sequence associated with permutation triple (e, e, e).

A278612

Sum of terms in level n of TRIP - Stern sequence associated with permutation triple (e, e, e).

Terms

    a(0) =3a(1) =8a(2) =22a(3) =60a(4) =162a(5) =436a(6) =1174a(7) =3164a(8) =8530a(9) =22996a(10) =61990a(11) =167100a(12) =450434a(13) =1214196a(14) =3273014a(15) =8822812a(16) =23782962a(17) =64109844a(18) =172815814a(19) =465845884a(20) =1255743842a(21) =3385009204a(22) =9124701142a(23) =24596733916a(24) =66303466770a(25) =178729002068a(26) =481785610086

External references