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 A179681 a(n)=(nextprime(n)+(n+1))(nextprime(n+1)+n)/2. 0
 8, 21, 36, 55, 78, 119, 171, 190, 210, 253, 300, 377, 465, 496, 528, 595, 666, 779, 903, 946, 990, 1173, 1378, 1431, 1485, 1540, 1596, 1711, 1830, 2077, 2346, 2415, 2485, 2556, 2628, 2849, 3081, 3160, 3240, 3403, 3570, 3827, 4095, 4186, 4278, 4653, 5050 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(1)=(nextprime(1)+2)(nextprime(2)+1)/2=(2+2)(3+1)/2=8 a(2)=(nextprime(2)+3)(nextprime(3)+2)/2=(3+3)(5+2)/2=21. MATHEMATICA Table[(NextPrime[n]+n+1)(NextPrime[n+1]+n)/2, {n, 100}] CROSSREFS Sequence in context: A139590 A154894 A241986 * A224039 A279895 A225287 Adjacent sequences:  A179678 A179679 A179680 * A179682 A179683 A179684 KEYWORD nonn AUTHOR Zak Seidov, Jul 24 2010 STATUS approved

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Last modified May 18 23:08 EDT 2021. Contains 344008 sequences. (Running on oeis4.)