A169652 -id:A169652 - cp's OEIS frontend

A176299 Variant sequence A169652, with a(1)=1 and a(2)=3.

1, 3, 16, 400, 176400, 31265312400, 977530816165936208400, 955566496615167328821016225384209913664400, 913107329453384594090655605142589591944555936335177523176387250981965992675658480400

Offset: 1

Giovanni Teofilatto, Apr 14 2010

nonn

Except for first two terms, sqrt(a(n+1)/a(n)) = A144780(n).

Indranil Ghosh, Table of n, a(n) for n = 1..12

a={1,3};Do[AppendTo[a,Total[a]^2],{9}];a (* Indranil Ghosh, Feb 20 2017 *)

#Program to generate the b-file
lst=[1,3]
print("1 1")
print("2 3")
i=3
a=sum(lst)**2
while i<=12:
    print(str(i)+" "+str(a))
    lst.append(a)
    i+=1
    a=sum(lst)**2 # Indranil Ghosh, Feb 20 2017

A176349 Integers equal to sqrt(A169652(n)/900).

Original entry on oeis.org

1, 31, 28861, 24988748491, 18733126534418632060921, 10527900892636182836790613691868303334293108151, 3325100916155092061227521396285672007717003791068669733032713344074584207918598201019772272181

Offset: 1

Giovanni Teofilatto, Apr 15 2010

nonn

a(n) is divisible by 31.

Cf. A169652.

cp's OEIS Frontend

A176299 Variant sequence A169652, with a(1)=1 and a(2)=3.

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A176349 Integers equal to sqrt(A169652(n)/900).

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