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A081949 Smallest square which is one more than the product of n (not necessarily distinct) numbers > 1. 1
4, 9, 9, 25, 49, 225, 289, 961, 4225, 16129, 16129, 201601, 261121, 1050625, 1050625, 62995969, 67092481, 67092481, 67092481, 822140929, 4295098369, 17179607041, 129923481601, 129923481601, 274876858369, 274876858369, 4398042316801 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..27.

EXAMPLE

a(2) = a(3) = 9 = 2*4+1 = 2*2*2 +1,a(6) = 225= 2*2*2*2*2*7 +1

PROG

(PARI) A = vector(30); count = 0; i = 1; while(count < 30, i = i + 1; n = i*i; k = bigomega(n - 1); while(count < k, count = count + 1; A[count] = n))

CROSSREFS

Cf. A081948.

Sequence in context: A095873 A141801 A177083 * A091657 A156047 A171001

Adjacent sequences:  A081946 A081947 A081948 * A081950 A081951 A081952

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Apr 02 2003

EXTENSIONS

More terms from David Wasserman, Jul 20 2004

STATUS

approved

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Last modified June 25 05:51 EDT 2021. Contains 345452 sequences. (Running on oeis4.)