A092844 -id:A092844 - cp's OEIS frontend

A287353 a(0)=0; for n>0, a(n) = 10*a(n-1) + prime(n).

0, 2, 23, 235, 2357, 23581, 235823, 2358247, 23582489, 235824913, 2358249159, 23582491621, 235824916247, 2358249162511, 23582491625153, 235824916251577, 2358249162515823, 23582491625158289

Offset: 0

Luke Zieroth, May 23 2017

Michael De Vlieger, Table of n, a(n) for n = 0..1000

Cf. A014824, A019518, A092844, A110299.

Cf. A379426 (prime terms).

FoldList[10 #1 + Prime@ #2 &, 0, Range@ 17] (* Michael De Vlieger, May 24 2017 *)

a(n) = fromdigits(primes(n)); \\ Kevin Ryde, Jun 22 2022

from sympy import prime
l = [0]
for i in range(20):
    l += [10 * l[i] + prime(i + 1)]
print(l) # Indranil Ghosh, May 25 2017

a(n) = Sum_{i=1..n} 10^(n-i)*prime(i), n >= 1. - Ya-Ping Lu, Dec 24 2024

A135483 a(n) = Sum_{j=1..n} prime(j)*2^(j-2).

Original entry on oeis.org

1, 4, 14, 42, 130, 338, 882, 2098, 5042, 12466, 28338, 66226, 150194, 326322, 711346, 1579698, 3513010, 7510706, 16292530, 34904754, 73177778, 156015282, 330078898, 703371954, 1517066930, 3211565746, 6667672242, 13848320690, 28478053042, 58811259570

Offset: 1

Ctibor O. Zizka, Feb 07 2008

G. C. Greubel, Table of n, a(n) for n = 1..1000

Cf. A000040, A000079, A092844, A110299.

Partial sums of A239885.

Table[Sum[2^(i-2) * Prime[i], {i, 1, n}], {n, 1, 10}] (* G. C. Greubel, Oct 15 2016 *)
Accumulate[Table[Prime[i]*2^(i-2),{i,30}]] (* Harvey P. Dale, Aug 14 2019 *)

a(n) = sum(k=1, n, prime(k)*2^(k-2)); \\ Michel Marcus, Oct 15 2016

cp's OEIS Frontend

A287353 a(0)=0; for n>0, a(n) = 10*a(n-1) + prime(n).

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