A364411 a(n) = prime(n) + 2*prime(n+1).

8, 13, 19, 29, 37, 47, 55, 65, 81, 91, 105, 119, 127, 137, 153, 171, 181, 195, 209, 217, 231, 245, 261, 283, 299, 307, 317, 325, 335, 367, 389, 405, 415, 437, 451, 465, 483, 497, 513, 531, 541, 563, 577, 587, 595, 621, 657, 677, 685, 695, 711, 721, 743, 765, 783

Offset

1,1

Comments

All terms > 8 are odd.

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

Formula

a(n) = a(n-1) + A191472(n-1).

a(n) = A000040(n) + A100484(n+1).

a(n) = A000040(n+1) + A001043(n).

Mathematica

ListConvolve[{2, 1}, Prime[Range[100]]] (* Paolo Xausa, Nov 02 2023 *)

Crossrefs

Cf. A000040, A001043, A062234, A100484, A191472 (first differences), A210497.

Sequence in context: A045636 A214723 A022954 * A359853 A070130 A070131

Adjacent sequences: A364408 A364409 A364410 * A364412 A364413 A364414

Keyword

nonn,easy

Author

Paul Curtz, Jul 23 2023

Status

approved