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A289108 Triangle read by rows: T(n,k) = (k + 1)*prime(n) + k for n > 0, 0 <= k <= n, and with T(0,0) = 1. 1
1, 2, 5, 3, 7, 11, 5, 11, 17, 23, 7, 15, 23, 31, 39, 11, 23, 35, 47, 59, 71, 13, 27, 41, 55, 69, 83, 97, 17, 35, 53, 71, 89, 107, 125, 143, 19, 39, 59, 79, 99, 119, 139, 159, 179, 23, 47, 71, 95, 119, 143, 167, 191, 215, 239, 29, 59, 89, 119, 149, 179, 209, 239, 269, 299, 329 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..65.

EXAMPLE

Triangle begins:

   1;

   2,   5;

   3,   7,  11;

   5,  11,  17,  23;

   7,  15,  23,  31,  39;

  11,  23,  35,  47,  59,  71;

  13,  27,  41,  55,  69,  83,  97;

  17,  35,  53,  71,  89, 107, 125, 143;

  19,  39,  59,  79,  99, 119, 139, 159, 179;

  23,  47,  71,  95, 119, 143, 167, 191, 215, 239;

  ...

MATHEMATICA

Join[{1}, t[n_, k_] := (k + 1) Prime[n] + k; Table[t[n, k], {n, 10}, {k, 0, n}]//Flatten]

PROG

(MAGMA) /* As triangle (here NthPrime(0)=1) */ [[(k+1)*NthPrime(n)+k: k in [0..n]]: n in [0.. 15]];

CROSSREFS

Cf. A000040, A008578, A072055.

Sequence in context: A192177 A288417 A159016 * A246364 A083190 A171026

Adjacent sequences:  A289105 A289106 A289107 * A289109 A289110 A289111

KEYWORD

nonn,tabl

AUTHOR

Vincenzo Librandi, Sep 02 2017

EXTENSIONS

Definition corrected by Bruno Berselli, Sep 06 2017

STATUS

approved

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Last modified November 29 18:31 EST 2021. Contains 349416 sequences. (Running on oeis4.)